Surfacing machine



July 31, 1923. 1,6330@ c. T. ADAlRET AL SURFACING MACHINE Filed March s1. A1922 Patented July 31, 19255.y

'uis stares CHARLES T. para anneaux. G. FREDERICK, or KANSAS CITY, ivrIssouRIQ-,

SURFACING MACHINE. i

Application filed AMarch 31, 1922.

'i To all whom t may concern.'

" which it appertains to Be it known that we, CHARLES T. ADAIP. and CARL G. FREDERICK, citizens of the United States, residing` .at vKansas City, in the countyoi:l Jackson and State offMissouri', have invented certain new and useful lmprovements in Surfacing Machines; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, andtotheligures of reference markedlthereon, which form a part of this specification.

This invention relates to surfacing machines and particularly to a machine for resurfacing butchers blocks although itis applicable for surfacing'any block or board not exceeding the capacity for which the machine is designed, for example, table tops andthe like may also be yre-surfacedFalthough as abovestated', the machine is primarily intended for rep-surfacing butchers blocks. A

Thel invention broadly contemplates the provision of means whereby the machine can be conveniently attached t-o the-block and whereby a circular` saw may be-driven from a suitable sourceofpower, the saw being supported upon a slidable arm having swinging'movement about the axis of its support, the arm being so mounted that it may be manually operated as to position so as to move the saw about an area compleL mentary to the portion ofthe block to be resurfaced.

The simplicity ofconstruction, ease of manipulation and eiiiciency ofresult will be manifest by reference to the followingl description in connection with the accompanying drawings, in which f f Fig. 1 isja perspective view of la machine constructed lin accordance with our invention, the' machine 'being illustrated as applied to a block to be reirfaced.

Fig. 2 is a view partly inelevation and partly in section oi" a block and a machine applied thereto, and Y ig. "3 isa sectional of Fig. 2. v Y

The reference numeral 1 designates a butchers blockV of conventional construction, supported upon the legs 2, 3 andllfin the usual manner, and itis shown as being partially re-surfaced by a machine, thefconview on the line 3-3 Serial So. 548,306.

invention. v f f The support or base of the machine is shown as consisting of a tubular member y5, having a lateral jaw 6 at its upperend, pref-4 struction of which is in'accordance 'with-'our erably provided with teeth lor tinesl 7 to engage the upper surface of the blockto' prevent slipping'thereof.

There is a vertically adjustable, complementary jaw 8 supported by the ring 9'-, sleeved on the tubular member 5, the jaw "6 co-operating with the jaw 8 'as ya clamping means 'for securing the member rigid with respect to the block. I

The jaw 8 is provided with a. needed jspur 10, which can be adjusted so that the spur can engage into the block at any V, desired depth and the ring 9 may be fastened at any adjusted screw 11. v

Within thelower portion of the member 5 is a threaded bore'12 to receive an adjusting screw 13 having a hand wheel 14 for operating-it. The vupper end oi" the screw 13 extends'intol the counter Ibore E15l in the tubular member 5, which receiveswa swivel 16, thelower end ofithevswivel,abutting againstA the upper'end of the screwfl so that when the screw 13 is operatedgfthe swivel will beraised or lowered,vit lbeing obvious .that a recession of the lscrewl will permit theswivel to slide down intov the counter bore 15 and .when the screw is pro# jected into the counter bo-re 15, the swivel 16 willbe raised.

. The swivel depends from the bottom of a i combined motor support and cutter arm'- supporting guide, shown as comprising two plates 17L and 18, fastened together by 1a fastening vdevice 19. l cast integral with the bottom plate -17 orl it may be separately secured thereto'in an obvious manner. f Supportedupon the top `plate 18 is an electric motor 20, receiving current from any Suitable SOlllCe'andv on the shaft thereof is la.

position by means of aset j tubular The swivel 16- may be pulley 21, driving a pulley 22vcarried'by the y v plates 17 and 18 .through the medium off-a belt23. v .-I 1., `The plates 1-7 and v18are providedv with half round grooves which, when theplates "3" are brought together, constitute cylindrical guidewa'ys 24 and 25 to receive therods'26 and`27 of the adjustable arm' 28. The rods 26 and 27 are connected at their ends by end bars 29v and' 30 andthese end-bars-are'proe I which may vided with. bearings 31 and 32 to receive a rotatable shaft 33.

The rotatable shaft is provided with a longitudinal groove 34, which extendsy from end to endand it receives a keyT 35, the key 35 being also received in the groove 3,6` in the pulley 22 and there being an adjusting screw 37 (see Fig. 3) to maintain the key or feather '35 in engagement with the groove 34 so` that; when the arm 28,' is slid longitudinally, there will always be driving connection between the pulley and; thev shaft 33 because the key or feather 35 will have a. loose the groove 34..

The end, bar 2 9 is provided with a bearing box 73,8,v having a removable cover or end wall 39 so that grease or other lubricant can be introduced into the box and within the b'oxfon the end of the shaft 33 is fixed a bevelfeelgear 40;,- meshinglwith a beveled` gearl 41er. the Shaft .42, j'Ourna-led 'in the bottom off the bar The. 42 extends below the bex and carries a circular saw 43` there- Qtla: .lrlflh Wlllpartakef of' the motion of" the shaft when the gear 4 1 is driven through the gear 40 Qn theshaft 33.

lrjejecting from thQto-p-Of the bok is a lug 0.1i ear 44,. to wh'c'h. 's fastened a handle 45 be grasped by the operator to manipulate "the arm to swing the sawY over the entire surface of the block or other deviceto-,be rie-surfaced. It istobe understood, of; course, that the sha-ft 33 also extends thmugh thesnpport and guide consisting'of 35 the plates 17( and. 181:

'\ When the parts are. assembled and it is clesretlite; re-surface the block, the Sub-base Support. 5 is. Clampedupon the. block, as shswningsl and Then; the screws 13 smanipnlated t0. raise' and. lower the. motor base.'v and arm supporting guide until the saw is the. .properplace Vto take off the high placesvoff, the block. The screw can be manipulated to raise andlower the saw at,wfill 1,and the` operator canl observe the depthof the depression in the block soy that there will; not be an; excess of the surface removed,itbeing desirable to only remove such portionsof the block as will give a flat Surfaceto the top thereof- Whenthe parts have been justed, the operator will grasp the handle 45., turn on the current to drive the motor 2Q sethat shaft Bwill be driven'to operate the saw through the gears 40y and 4l and the shaft42, and thesaw canthen swinguin eitherare to the right or left because the swivel 16 loosely lits within the countery bore 1,5.. andhaS-.a pointcontact with the endv of theserew .13-

Thierm Caribe movedv longitudinally. by pressingbr pulling lupon the handle 45 beeausethe guiderods 26and 27 have a loose fit-.-iii-theirV support and guide, as does also theshaft.33; which receivesrits; motion from properly ad.-

the pulley 26 through the medium of the belt Q3 and the pulley 2:2.

lt will be apparent, of course, that there will be considerable freedom of movement of the saw because it can be swung either laterally or back and forth, as the occasion or the judgment of the operator dictates.

The subdoase, consisting of the tubular member 5, may be fastened to any thickness of block because thev collar 9 is adjustable thereon and it carries the movable jaw 8. Any thickness of cut may be made by the saw 43 provided itis notv thicker than the disr tance between the saw and the bottom of the boX 38. Ordinarily, however, a very thin cut will be made because the thinner the cut at each operation, the longer the block will be effective to give service.

The device can be readily applied and de.- tached from the. block and operated in amost convenient and effective manner, the surfacing being accomplishedy in-a very small period of time and the result being entirely satisfactory, as has been-- demonstrated in actual practice.

Attention is called to the fact. that the guide which supports the motor constitutes an intermediate bearing for the drive shaft and that the shaft is supported intermediate its ends as well asy at its ends. by this guide because when the; armis moved back and forth, there is. always anintermediate supportV for the shaft irrespective of the position of the arm. This is an important feature because with a4 shaft as longr as the drive shaft, there will bev liability of warping or chattering if some intermediate support were not provided...

What we claim and desirev to secure by Letters-Patent is:

l. A surfacingmachine comprising a-.base, means for clampingy thebase. to. the work to be surfaced,.a platehaving a swivel mounted inv thebase, a second plate. fastened to the first. plate, any arm.v comprising a skeleton frame consisting of side bars and end bars, the side bars being slidable` in grooves in the two plates, a` shaft'journaled; in' the end bars and slidable between the two plates, the shaft having a, longitudinal groove, a pulley mounted in the plates and; having a keyedv connection with the. groove in the shaft, a motor carried by one off the plates, a driving connection between the motor and the pulley, and a saw carried by one. of the end bars and in driving connection with the shaft.

2. A surfacing machine comprising a tubular member having a rigid jaw. at= one end to engage the work to be surfaced, an ade justable jaw sleevedonthetubular member to engage the work tobe.l surfacedwhereby the work will be clamped between the two jaws, a swivel slidable in a. recess. in the tubular member, a screw having threaded lllO tubular member and adapted to vertically adjust the swivel, a sliding arm supported by the swivel, a savv carried by the arm, and means for operating the saw. y

3. In a surfacing machine, `a supporting base, means for clamping the base to the Work to be surfaced, a swivel carried by the base, an arm guide at the upper end of the swivel, an arm slidable in the guide, a saw at one end of the arm, and an operating shaft extending longitudinally of and'substantially cao-extensive With the arm, the shaft extending through a'bearing in the guide so that the shaft will be supported inconnection with the termediateits ends at Whatever position the arm assumes With respect to the guide.v

4. In a surfacing machine, a support,

a swivel mounted in `the support, an arm support and i support and guide, means adapted to swing guide, .means carried by thev swivel, a freely slidable arm carried bysaid' With it about the axis of the swivel, a shaft v supported by the arm, a saw carried by the arm, and means on the arm shaft, the shaft having' freesldable movement With respect to the last named means so that When the arm is slid baclk and forth .y

with respect tothe .support and guide `means the shaftwill move with said arm.

In testimony whereof We. afiix our signatures p p y n i CHARLES T'. ADAIRQ .CARL G. FREDERICK.

for rotating the 

